合成路线1

The chiral epoxide (VIII) was prepared as follows. 4-Hydroxy-3-nitroacetophenone (I) was protected as the silyl derivative (II) and then subjected to a Baeyer-Villiger rearrangement to afford the phenol acetate ester (III). Hydrogenation of the nitro group of (III) over Raney nickel provided aniline (IV), which was acylated by methanesulfonyl chloride producing sulfonamide (V). After protection of the sulfonamide NH of (V) with Boc2O, basic hydrolysis of the acetate ester furnished phenol (VI). Mitsunobu coupling between phenol (VI) and (R)-glycidol (VII) led to the glycidyl ether (VIII).